.buttom {

  width: 100rpx;

  height: 100rpx;

  display: flex;

  flex-direction: row;

  position: fixed;

  bottom: 60rpx;

  right: 60rpx;

  z-index: 1001;

}

.drawer_screen {

  width: 100%;

  height: 100%;

  position: fixed;

  top: 0;

  left: 0;

  right: 0;

  bottom: 0;

  z-index: 1000;

  background: #000;

  opacity: 0.5;

  overflow: hidden;

}

.drawer_box {

  overflow: hidden;

  position: fixed;

  z-index: 1001;

}